CN221103120U - Driving mechanism and vehicle - Google Patents

Abstract

The application relates to the field of new energy automobiles, and particularly discloses a driving mechanism and a vehicle, wherein the driving mechanism comprises a motor assembly, a speed reducer assembly and a buffer structure; the motor assembly comprises a motor shell and a motor arranged in the motor shell, and the motor comprises a driving shaft; the speed reducer assembly comprises a speed reducer shell and an input shaft arranged in the speed reducer shell, the speed reducer shell is fixedly connected with the motor shell, and the speed reducer shell and the motor shell are communicated with each other; the driving shaft is connected with the input shaft, and the input shaft rotates along with the driving shaft; the driving shaft abuts against the buffer structure when moving along the axis of the driving shaft. According to the driving mechanism provided by the embodiment of the application, the buffer structure is arranged on the input shaft, so that the driving shaft can be axially limited, the buffer structure can buffer the vibration generated during the working of the driving shaft, and the transmission of the vibration to the outside is improved or avoided, thereby reducing the noise generated by the vibration and improving the stability and reliability of the driving mechanism.

Description

Driving mechanism and vehicle

Technical Field

The utility model relates to the field of new energy automobiles, in particular to a driving mechanism and a vehicle.

Background

In order to cope with the ever-increasing fuel price and the variable international petroleum form, the use of new energy sources, such as electric energy, hydrogen energy and the like, is greatly promoted in China. The new energy automobile develops most rapidly, and the final driving vehicle drives the motor regardless of electric energy or hydrogen energy. Compared with an internal combustion engine used by a traditional vehicle, the new energy automobile has higher requirements on a motor used by the new energy automobile.

However, most of motors used in the existing new energy automobiles have the problems of high noise, influence on comfort and the like.

Disclosure of utility model

The application provides a driving mechanism and a vehicle, wherein the driving mechanism can reduce driving noise and improve the driving stability and reliability of the vehicle.

In order to solve the technical problems, the application adopts a technical scheme that: provided are a driving mechanism and a vehicle, the driving mechanism including: a motor assembly, a speed reducer assembly and a buffer structure; the motor assembly comprises a motor shell and a motor arranged in the motor shell, and the motor comprises a driving shaft; the speed reducer assembly comprises a speed reducer shell and an input shaft arranged in the speed reducer shell, the speed reducer shell is fixedly connected with the motor shell, and the speed reducer shell and the motor shell are communicated with each other; the driving shaft is connected with the input shaft, and the input shaft rotates along with the driving shaft; the buffer structure is arranged on the input shaft, and the driving shaft abuts against the buffer structure when moving along the axis of the input shaft.

The input shaft is provided with a mounting cavity along the axis of the input shaft, the driving shaft is mounted in the mounting cavity, the driving shaft can move along the axis in the mounting cavity, and the input shaft and the driving shaft rotate around the axis together;

In the axial direction, a gap is left between the end face of the driving shaft and the side wall of the mounting cavity, and the driving shaft can move along the axis in the mounting cavity.

Wherein the input shaft comprises a mounting end surface facing the driving shaft, and the mounting cavity penetrates through the mounting end surface; the driving shaft is provided with a step surface facing the mounting cavity, and a buffer distance is reserved between the step surface and the mounting end surface.

Wherein the input shaft and the drive shaft are connected by a spline.

Wherein the buffer structure comprises a first buffer member; the first buffer piece is sleeved on the driving shaft and is positioned between the buffer distances.

The motor assembly further comprises a first bearing, the driving shaft comprises a main body shaft and a first mounting end connected with the main body shaft, and the first mounting end is far away from the input shaft; the first mounting end is fixedly supported on the first bearing; the buffer structure comprises a second buffer piece, wherein the second buffer piece is sleeved at the first mounting end and elastically props against the first bearing and the main body shaft; or the second buffer piece is arranged on the motor shell, and the second buffer piece elastically abuts against the motor shell and the first bearing.

The application also comprises a second technical proposal, the speed reducer component comprises a speed reducer shell, the input shaft is arranged in the speed reducer shell, the speed reducer shell is fixedly connected with the motor shell, and the speed reducer shell and the motor shell are communicated with each other; the motor assembly further includes a first bearing and a second bearing; the driving shaft comprises a main body shaft, a first mounting end and a second mounting end, wherein the first mounting end and the second mounting end are connected with the opposite ends of the main body shaft; the first mounting end is fixedly supported on a first bearing, the second mounting end is fixedly supported on a second bearing, and the first bearing and the second bearing are respectively propped against the motor shell and the speed reducer shell; the buffer structure comprises a first buffer piece and a second buffer piece; the first buffer piece and the second buffer piece are respectively arranged at the first installation end and the second installation end, the first buffer piece elastically abuts against the first bearing and the main body shaft, and the second buffer piece elastically abuts against the second bearing and the main body shaft.

The application also comprises a third technical proposal, the speed reducer component comprises a speed reducer shell, the input shaft is arranged in the speed reducer shell, the speed reducer shell is fixedly connected with the motor shell, and the speed reducer shell and the motor shell are communicated with each other; the motor assembly further includes a first bearing and a second bearing; the driving shaft comprises a main body shaft, a first mounting end and a second mounting end, wherein the first mounting end and the second mounting end are connected with the two opposite ends of the main body shaft, the first mounting end is fixedly supported on a first bearing, and the second mounting end is fixedly supported on a second bearing; the buffer structure comprises a first buffer piece and a second buffer piece, the first buffer piece and the second buffer piece are respectively arranged on the motor shell and the speed reducer shell, the first buffer piece elastically abuts against the motor shell and the first bearing, and the second buffer piece elastically abuts against the speed reducer shell and the second bearing.

The application also comprises a fourth technical proposal, the speed reducer component comprises a speed reducer shell, the input shaft is arranged in the speed reducer shell, the speed reducer shell is fixedly connected with the motor shell, and the speed reducer shell and the motor shell are communicated with each other; the motor assembly further includes a first bearing and a second bearing; the driving shaft comprises a main body shaft, a first mounting end and a second mounting end, wherein the first mounting end and the second mounting end are connected with the two opposite ends of the main body shaft, the first mounting end is fixedly supported on a first bearing, and the second mounting end is fixedly supported on a second bearing; the buffer structure comprises a first buffer piece and a second buffer piece, the first buffer piece is arranged on the motor shell, and the second buffer piece is optionally arranged at the first installation end or the second installation end; the first buffer piece elastically abuts against the motor shell and the first bearing or the second bearing; the second buffer member elastically abuts against the main body shaft and the second bearing or the first bearing.

The application further comprises a fifth technical scheme, and provides a vehicle which comprises the driving mechanism.

The application has the beneficial effects that: compared with the prior art, the driving mechanism and the vehicle provided by the application have the advantages that the buffer structure is arranged on the input shaft, so that the driving shaft can be axially limited, the buffer structure can buffer the vibration generated during the working of the driving shaft, and the transmission of the vibration to the outside is improved or avoided, thereby reducing the noise generated by the vibration and improving the stability and the reliability of the driving mechanism.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a driving mechanism according to the present application;

FIG. 2 is a schematic view of another embodiment of a driving mechanism according to the present application;

fig. 3 is a schematic structural view of another embodiment of the driving mechanism provided by the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms "first," "second," and "first," herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "several," "a plurality" means at least two, such as two, three, etc., unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1 in combination, fig. 1 is a schematic structural diagram of an embodiment of a driving mechanism according to the present application. In one aspect of the present application, there is provided a drive mechanism 100 comprising a motor assembly, a reducer assembly and a buffer structure 3; the motor assembly comprises a motor shell 11 and a motor arranged in the motor shell 11, wherein the motor comprises a driving shaft 12; the speed reducer assembly comprises a speed reducer shell 21 and an input shaft 22 arranged on the speed reducer shell 21, the speed reducer shell 21 is fixedly connected with the motor shell 11, and the speed reducer shell 21 and the motor shell 11 are communicated with each other; the drive shaft 12 is connected with the input shaft 22, and the input shaft 22 rotates with the drive shaft 12; the drive shaft 12 abuts against the buffer structure 3 when moving along its axis.

Specifically, the motor housing 11 is fixedly connected with the left housing 211 of the speed reducer housing 21, the left housing 211 of the speed reducer housing 21 is fixedly connected with the right housing 212, the motor housing 11 cooperates with the left housing 211 to support the drive shaft 12, and the right housing 212 can be used to support the input shaft 22. The motor housing 11 communicates with the left housing 211 and the right housing 212 such that the driving shaft 12 is connected to the input shaft 22, and the driving shaft 12 can rotate the input shaft 22.

In use, the drive mechanism of the present application inevitably produces vibrations that are transmitted through the drive shaft 12 and all the way to the input shaft 22. During transmission, the vibrations will force the drive shaft 12 to move along its axis towards the input shaft 22. Due to the buffer structure 3, when the driving shaft 12 moves along the axis thereof, the driving shaft 12 can be axially limited, the vibration generated by the driving shaft 12 is relieved, and the noise generated by the driving shaft 12 striking the motor housing 11 or the left housing 211 is avoided to a certain extent; further, the impact of the drive shaft 12 on the input shaft 22 as it moves along its axis may be dampened, thereby reducing the vibration transmitted by the drive shaft 12 to the input shaft 22; another aspect improves or avoids noise caused by the impact of the drive shaft 12 with the input shaft 22 and the impact of the input shaft 22 with the right housing 212 due to the impact of the drive shaft 12 with the input shaft 22, and improves the stability and reliability of the drive mechanism 100.

In another embodiment of the present application, the driving mechanism 100 may also include a motor assembly and a buffer structure 3, wherein the motor assembly includes a motor housing 11 and a motor disposed in the motor housing 11, and the motor includes a driving shaft 12; the buffer structure 3 is arranged at two ends of the driving shaft 12, and can axially limit the driving shaft 12. The driving shaft 12 abuts against the buffer structure 3 when moving along the axis thereof, on one hand, the vibration transmitted to the motor housing 11 by the driving shaft 12 can be reduced, and on the other hand, the noise generated by the driving shaft 12 striking the motor housing 11 or the left housing 211 can be improved or avoided.

In one embodiment of the application, the input shaft 22 is provided with a mounting cavity along its axis, and the drive shaft 12 is mounted in the mounting cavity, wherein the drive shaft 12 is movable along the axis within the mounting cavity to facilitate feeding of the drive shaft 12, and the input shaft 22 and the drive shaft 12 rotate together about the axis. The drive shaft 12 rotates the input shaft 22 together about an axis, thereby transmitting a driving force to the input shaft 22. A gap is left between the end face of the drive shaft 12 and the side wall of the mounting cavity in the axial direction to provide space for axial movement of the drive shaft 12, so that when the drive mechanism is in operation, the drive shaft 12 can have space to move within the mounting cavity without rattling against the input shaft 22 to produce noise.

Specifically, in one embodiment, the mounting cavity may be located within the left housing 211. In another embodiment, the mounting cavity may also be located within the right housing 212. In other embodiments, the mounting cavity may also be located near the junction of the left housing 211 and the right housing 212. In the embodiment of the application, the driving shaft 12 can move along the axis in the mounting cavity, so that the loss of power transmission can be reduced, the driving efficiency is improved, and meanwhile, the vulnerable points and the fault points of the driving shaft 12 moving along the axis are reduced, thereby reducing the maintenance cost.

In one embodiment of the application, the input shaft 22 includes a mounting face 4 facing the drive shaft 12, the mounting cavity extending through the mounting face 4; the drive shaft 12 is provided with a step surface 5 facing the mounting cavity, and a buffer distance is arranged between the step surface 5 and the mounting end surface 4.

Thus, the buffer distance is set to absorb part of the impact of the movement of the drive shaft 12 along the axis when the drive shaft 12 moves along the axis in the mounting cavity, and the step surface 5 and the mounting end surface 4 are improved or avoided from colliding, so that the drive shaft 12 is protected from the impact and collision. In addition, by setting the buffer distance, the influence of friction force on the axial movement of the step surface 5 can be reduced, thereby reducing vibration and noise and improving the stability and reliability of the drive shaft 12.

In one embodiment of the present application, the input shaft 22 and the drive shaft 12 are splined.

Specifically, the input shaft 22 is fixedly connected to the drive shaft 12 via splines, and the drive shaft 12 transmits torque to the input shaft 22 via the splines to rotate the input shaft 22. In one embodiment, the spline may be provided on the drive shaft 12. In another embodiment, splines may also be provided on the input shaft 22.

In one embodiment of the present application, the buffer structure 3 includes a first buffer member 31; the first buffer member 31 is sleeved on the driving shaft 12 and located between the buffer distances.

Specifically, the first buffer member 31 is sleeved on the driving shaft 12, so as to absorb part of the impact of the driving shaft 12 moving along the axis, protect the driving shaft 12 from impact and collision, and also alleviate the vibration generated during the operation of the driving shaft 12, thereby reducing the noise generated by the vibration. The first buffer member 31 is disposed between the buffer distances, so that collision between the driving shaft 12 and the input shaft 22 can be improved or avoided, the driving shaft 12 and the input shaft 22 are in flexible contact, transmission of vibration can be reduced, noise is further reduced, and stability and reliability of the driving shaft 12 are improved.

Further, when the driving shaft 12 moves along the axis, the first buffer member 31 can also play a limiting role, the first buffer member 31 abuts against the input shaft 22, and a reaction force is applied to the driving shaft 12 to position and limit the driving shaft 12. In a particular embodiment, the first dampener 31 may include an elastomeric ring to reduce wear between the drive shaft 12 and the input shaft 22, reducing noise from vibrations. In another embodiment, the first cushioning member 31 may also comprise other resilient materials or structures, such as a metal spring, etc.

In an embodiment of the present application, as shown in fig. 1, the motor assembly further includes a first bearing 13, the driving shaft 12 includes a main shaft 121 and a first mounting end 122 connected to the main shaft 121, and the first mounting end 122 is far away from the input shaft 22; the first mounting end 122 is fixedly supported on the first bearing 13. Specifically, the first mounting end 122 is coupled to the body shaft 121 on a side of the body shaft 121 remote from the input shaft 22. The first bearing 13 is used to support the first mounting end 122, thereby supporting and protecting the drive shaft 12. The buffer structure 3 includes a second buffer member 32, wherein in one embodiment, the second buffer member 32 may be sleeved on the first mounting end 122 and elastically abuts against the first bearing 13 and the main shaft 121. In another embodiment, the second buffer member 32 may also be mounted on the motor housing 11, and the second buffer member 32 elastically abuts against the motor housing 11 and the first bearing 13. A first stepped surface facing the first mounting end 122 is disposed between the main body shaft 121 and the first mounting end 122, and the second buffer member 32 abuts against the unit stepped surface, and further abuts against the main body shaft 121.

Further, in one embodiment, the second buffer member 32 may be mounted on the first mounting end 122 and elastically abuts against the first bearing 13 and the main body shaft 121, so as to absorb and alleviate the vibration of the first bearing 13 and the main body shaft 121, thereby reducing noise. In another embodiment, the second buffer member 32 may also be installed on the motor housing 11, and the second buffer member 32 elastically abuts against the motor housing 11 and the first bearing 13, so as to play a role in positioning and limiting the first bearing 13, and at the same time, also buffer the impact of the first bearing 13 on the motor housing 11, alleviate the vibration of the first bearing 13, and also reduce the vibration transmitted between the driving shaft 12 and the motor housing 11, thereby reducing the noise generated by the vibration, and improving the stability and reliability of the driving shaft 12.

Further, in some embodiments, the second cushioning member 32, like the first cushioning member 31, may comprise an elastic loop; or other resilient material such as a metal spring, etc.

Referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of a driving mechanism according to the present application. The present application also includes a second technical solution similar to the first technical solution described above, and the second technical solution further includes a second bearing 14; the drive shaft 12 includes a body shaft 121, a first mounting end 122 and a second mounting end 123 connecting opposite ends of the body shaft 121; the first mounting end 122 is fixedly supported on the first bearing 13, the second mounting end 123 is fixedly supported on the second bearing 14, and the first bearing 13 and the second bearing 14 are respectively abutted against the motor housing 11 and the speed reducer housing 21. The first buffer member 31 and the second buffer member 32 are respectively mounted at the first mounting end 122 and the second mounting end 123, the first buffer member 31 elastically abuts against the first bearing 13 and the main body shaft 121, and the second buffer member 32 elastically abuts against the second bearing 14 and the main body shaft 121.

Specifically, the first mounting end 122 may be located on one side of the main shaft 121 near the input shaft 22, the second mounting end 123 is located on the other side of the main shaft 121, the main shaft 121 is provided with a first step surface facing the first mounting end 122 and a second step surface facing the second mounting end 123, the first buffer member 31 abuts against the first step surface and further abuts against the main shaft 121, and the second buffer member 32 abuts against the second step surface and further abuts against the main shaft 121. The first bearing 13 is used for supporting the first mounting end 122, and the second bearing 14 is used for supporting the second mounting end 123, wherein the first bearing 13 is propped against the left housing 211, the second bearing 14 is propped against the motor housing 11, and the driving shaft 12 is supported and protected through the cooperation of the first bearing 13, the second bearing 14, the left housing 211 and the motor housing 11. The first buffer member 31 is abutted against the first bearing 13 and the main body shaft 121, so that the vibration of the first bearing 13 can be absorbed and relieved, and then the vibration of the first bearing 13 can be absorbed and relieved, and similarly, the second buffer member 32 is elastically abutted against the second bearing 14 and the main body shaft 121, so that the vibration of the second bearing 14 can be absorbed and relieved, and then the vibration of the main body shaft 121 can be absorbed and relieved, and further, the first buffer member 31 is matched with the second buffer member 32, so that the vibration of the driving shaft 12 can be absorbed and relieved, and the noise generated by the vibration can be reduced, and further, the stability and the reliability of the driving shaft 12 can be improved.

Further, in another embodiment, the first mounting end 122 may also be disposed on a side of the body shaft 121 remote from the input shaft 22, and the second mounting end 123 is disposed on the other side of the body shaft 121. The first bearing 13 abuts against the motor housing 11, the second bearing 14 abuts against the left housing 211, the first buffer 31 abuts against the first bearing 13 and the main body shaft 121, and the second buffer 32 elastically abuts against the second bearing 14 and the main body shaft 121. In another embodiment, the first buffer member 31 may be abutted against the second bearing 14 and the main body shaft 121, and the second buffer member 32 may be abutted against the first bearing 13 and the main body shaft 121.

Referring to fig. 3, fig. 3 is a schematic structural diagram of another embodiment of a driving mechanism according to the present application. The present application further includes a third technical aspect, which is different from the second technical aspect in the arrangement positions of the first bearing 13, the second bearing 14, the first buffer 31, and the second buffer 32. Specifically, the first cushioning member 31 elastically abuts against the motor housing 11 and the first bearing 13, and the second cushioning member 32 elastically abuts against the speed reducer housing 21 and the second bearing 14.

Specifically, the first mounting end 122 is connected to an end of the main body shaft 121 remote from the input shaft 22, the first bearing 13 is used to support the first mounting end 122, the second mounting end 123 is connected to the other end of the main body shaft 121, and the second bearing 14 is used to support the second mounting end 123. The first buffer member 31 is mounted on the motor housing 11, abuts against the motor housing 11 and the first bearing 13, and can buffer the impact of the motor housing 11 on the first bearing 13, absorb and alleviate the vibration of the first bearing 13, and further absorb and alleviate the vibration of the first mounting end 122, and similarly, the second buffer member 32 is mounted on the left housing 211 of the speed reducer housing 21, abuts against the left housing 211 and the second bearing 14, and can buffer the impact of the left housing 211 on the second bearing 14, absorb and alleviate the vibration of the second bearing 14, and further absorb and alleviate the vibration of the second mounting end 123, so as to reduce noise. Further, the first buffer member 31 and the second buffer member 32 can cooperate to limit the first bearing 13 and the second bearing 14, thereby positioning and limiting the driving shaft 12, and buffering vibration generated when the driving shaft 12 works, improving or avoiding the transmission of the vibration to the outside through the motor housing 11 and the left housing 211, thereby reducing noise generated by the vibration and improving stability and reliability.

Referring to fig. 2 and 3 in combination, the present application further includes a fourth technical solution, which is to combine the second technical solution with the third technical solution, specifically, the first buffer member 31 is mounted on the motor housing 11, and elastically abuts against the motor housing 11 and the first bearing 13 or the second bearing 14, and the second buffer member 32 is selectively mounted on the first mounting end 122 or the second mounting end 123, and elastically abuts against the main body shaft 121 and the second bearing 14 or the first bearing 13.

Specifically, the first mounting end 122 is connected to an end of the main body shaft 121 remote from the input shaft 22, the first bearing 13 is used to support the first mounting end 122, the second mounting end 123 is connected to the other end of the main body shaft 121, and the second bearing 14 is used to support the second mounting end 123. The body shaft 121 is provided with a first stepped surface facing the first mounting end 122 and a second stepped surface facing the second mounting end 123. In a specific embodiment, the first buffer member 31 may be mounted on the motor housing 11, abuts against the motor housing 11 and the first bearing 13, may buffer the impact of the motor housing 11 on the first bearing 13, absorb and alleviate the vibration of the first bearing 13, and further absorb and alleviate the vibration of the first mounting end 122, the second buffer member 32 may be mounted on the second mounting end 123, and the second buffer member 32 abuts against the second step surface, and further abuts against the main body shaft 121 and the second bearing 14, and may alleviate the vibration of the main body shaft 121 and the second bearing 14. Further, the first buffer member 31 and the second buffer member 32 cooperate to absorb and buffer the vibration of the driving shaft 12 and reduce the vibration transmitted from the driving shaft 12 to the motor housing 11, thereby reducing noise and improving stability and reliability. In another embodiment, the second buffer 32 may also be mounted on the first mounting end 122 against the first stepped surface, and thus against the main shaft 121 and the first bearing 13. In another embodiment, the first buffer member 31 may also abut against the motor housing 11 and the second bearing 14, and the second buffer member 32 may be mounted to the second mounting end 123, abutting against the main body shaft 121 and the second bearing 14. In another embodiment, the second buffer 32 may also be mounted to the first mounting end 122 against the body shaft 121 and the first bearing 13. In other embodiments, other mating means may also be included.

Further, in the embodiment of the present application, the motor assembly further includes a motor rotor 15 and a motor stator 16, the motor stator 16 is fixedly connected with the motor housing 11, and the motor rotor 15 is fixedly connected with the driving shaft 12. Through the positioning and limiting of the buffer structure 3 to the driving shaft 12, the driving shaft 12 can be located at a central position relative to the motor housing 11, so that the motor rotor 15 is centered relative to the motor stator 16, vibration transmitted to the motor stator 16 when the motor rotor 15 rotates is reduced, vibration received by the motor housing 11 is further reduced, noise is reduced, and stability and reliability of the driving mechanism 100 are improved.

In another aspect of the present application, there is also provided a vehicle including the driving mechanism 100 described above. Specifically, since the vehicle includes the driving mechanism 100 described in the above embodiment, the driving mechanism 100 also has the advantages that the driving mechanism 100 has, and will not be described in detail herein.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims (10)

1. A drive mechanism, comprising:

The motor assembly comprises a motor shell (11) and a motor arranged in the motor shell (11), wherein the motor comprises a driving shaft (12);

A speed reducer assembly comprising an input shaft (22), the drive shaft (12) being connected to the input shaft (22), and the input shaft (22) rotating with the drive shaft (12);

And the driving shaft (12) abuts against the buffer structure (3) when moving along the axis of the buffering structure (3).

2. The drive mechanism according to claim 1, wherein the input shaft (22) is provided with a mounting cavity along its axis, the drive shaft (12) being mounted in the mounting cavity, wherein the input shaft (22) and the drive shaft (12) rotate together about the axis;

Along the axis direction, a gap is left between the end face of the driving shaft (12) and the side wall of the mounting cavity, and the driving shaft (12) can move along the axis in the mounting cavity.

3. The drive mechanism according to claim 2, wherein the input shaft (22) comprises a mounting end face (4) facing the drive shaft (12), the mounting cavity extending through the mounting end face (4);

The driving shaft (12) is provided with a step surface (5) facing the mounting cavity, and a buffer distance is reserved between the step surface (5) and the mounting end surface (4).

4. The drive mechanism according to claim 2, wherein the input shaft (22) and the drive shaft (12) are connected by splines.

5. A drive mechanism according to claim 3, characterized in that the buffer structure (3) comprises a first buffer (31);

The first buffer piece (31) is sleeved on the driving shaft (12) and is positioned between the buffer distances.

6. The drive mechanism of claim 5, wherein the motor assembly further comprises a first bearing (13), the drive shaft (12) comprising a main body shaft (121) and a first mounting end (122) connected to the main body shaft (121), the first mounting end (122) being remote from the input shaft (22);

The first mounting end (122) is fixedly supported on the first bearing (13);

The cushioning structure (3) comprises a second cushioning member (32), wherein,

The second buffer piece (32) is sleeved at the first mounting end (122) and elastically abuts against the first bearing (13) and the main body shaft (121);

Or the second buffer member (32) is mounted on the motor housing (11), and the second buffer member (32) elastically abuts against the motor housing (11) and the first bearing (13).

7. A drive mechanism according to any one of claims 1-3, characterized in that the reducer assembly comprises a reducer housing (21), the input shaft (22) being mounted in the reducer housing (21), the reducer housing (21) being fixedly connected to the motor housing (11), and the reducer housing (21) and the motor housing (11) being in communication with each other;

The motor assembly further comprises a first bearing (13) and a second bearing (14);

the drive shaft (12) includes a main body shaft (121), a first mounting end (122) and a second mounting end (123) connecting opposite ends of the main body shaft (121);

The first mounting end (122) is fixedly supported on the first bearing (13), the second mounting end (123) is fixedly supported on the second bearing (14), and the first bearing (13) and the second bearing (14) respectively abut against the motor shell (11) and the speed reducer shell (21);

The buffer structure (3) comprises a first buffer (31) and a second buffer (32);

The first buffer member (31) and the second buffer member (32) are respectively arranged at the first installation end (122) and the second installation end (123), the first buffer member (31) elastically abuts against the first bearing (13) and the main body shaft (121), and the second buffer member (32) elastically abuts against the second bearing (14) and the main body shaft (121).

8. A drive mechanism according to any one of claims 1-3, characterized in that the reducer assembly comprises a reducer housing (21), the input shaft being mounted in the reducer housing (21), the reducer housing (21) being fixedly connected to the motor housing (11), and the reducer housing (21) and the motor housing (11) being in communication with each other;

The motor assembly further comprises a first bearing (13) and a second bearing (14);

The drive shaft (12) comprises a main body shaft (121), a first mounting end (122) and a second mounting end (123) which are connected with two opposite ends of the main body shaft (121), wherein the first mounting end (122) is fixedly supported on the first bearing (13), and the second mounting end (123) is fixedly supported on the second bearing (14);

The buffer structure (3) comprises a first buffer piece (31) and a second buffer piece (32), the first buffer piece (31) and the second buffer piece (32) are respectively installed on the motor shell (11) and the speed reducer shell (21), the first buffer piece (31) elastically abuts against the motor shell (11) and the first bearing (13), and the second buffer piece (32) elastically abuts against the speed reducer shell (21) and the second bearing (14).

9. A driving mechanism according to any one of claims 1 to 3, wherein,

The speed reducer assembly comprises a speed reducer shell (21), the input shaft is arranged in the speed reducer shell (21), the speed reducer shell (21) is fixedly connected with the motor shell (11), and the speed reducer shell (21) and the motor shell (11) are communicated with each other;

The motor assembly further comprises a first bearing (13) and a second bearing (14);

The drive shaft (12) comprises a main body shaft (121), a first mounting end (122) and a second mounting end (123) which are connected with two opposite ends of the main body shaft (121), wherein the first mounting end (122) is fixedly supported on the first bearing (13), and the second mounting end (123) is fixedly supported on the second bearing (14);

The buffer structure (3) comprises a first buffer piece (31) and a second buffer piece (32), the first buffer piece (31) is installed on the motor shell (11), and the second buffer piece (32) is optionally installed on the first installation end (122) or the second installation end (123);

The first buffer piece (31) elastically abuts against the motor shell (11) and the first bearing (13) or the second bearing (14);

the second buffer (32) elastically abuts against the main body shaft (121) and the second bearing (14) or the first bearing (13).

10. A vehicle characterized by comprising a drive mechanism (100) according to any one of claims 1-9.